結果
問題 | No.921 ずんだアロー |
ユーザー | McGregorsh |
提出日時 | 2022-07-06 09:19:14 |
言語 | PyPy3 (7.3.15) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,054 bytes |
コンパイル時間 | 253 ms |
コンパイル使用メモリ | 82,464 KB |
実行使用メモリ | 103,896 KB |
最終ジャッジ日時 | 2024-12-21 05:44:46 |
合計ジャッジ時間 | 5,519 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
(要ログイン)
テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 119 ms
83,440 KB |
testcase_01 | AC | 122 ms
83,100 KB |
testcase_02 | AC | 123 ms
83,584 KB |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | AC | 121 ms
83,440 KB |
testcase_07 | AC | 119 ms
83,400 KB |
testcase_08 | AC | 122 ms
83,352 KB |
testcase_09 | AC | 121 ms
83,388 KB |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | AC | 138 ms
89,704 KB |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | AC | 142 ms
94,380 KB |
testcase_16 | AC | 137 ms
89,252 KB |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | AC | 155 ms
103,556 KB |
testcase_24 | WA | - |
ソースコード
import sys, re from math import ceil, floor, sqrt, pi, factorial, gcd from copy import deepcopy from collections import Counter, deque, defaultdict from heapq import heapify, heappop, heappush from itertools import accumulate, product, combinations, combinations_with_replacement, permutations from bisect import bisect, bisect_left, bisect_right from functools import reduce from decimal import Decimal, getcontext def i_input(): return int(input()) def i_map(): return map(int, input().split()) def i_list(): return list(i_map()) def i_row(N): return [i_input() for _ in range(N)] def i_row_list(N): return [i_list() for _ in range(N)] def s_input(): return input() def s_map(): return input().split() def s_list(): return list(s_map()) def s_row(N): return [s_input for _ in range(N)] def s_row_str(N): return [s_list() for _ in range(N)] def s_row_list(N): return [list(s_input()) for _ in range(N)] def lcm(a, b): return a * b // gcd(a, b) def get_distance(x1, y1, x2, y2): d = sqrt((x2 - x1) ** 2 + (y2 - y1) ** 2) return d def rotate(table): n_fild = [] for x in zip(*table[::-1]): n_fild.append(x) return n_fild sys.setrecursionlimit(10 ** 7) INF = float('inf') MOD = 10 ** 9 + 7 MOD2 = 998244353 ###関数コピーしたか?### def main(): n = int(input()) a = i_list() juge = [False] * n for i in range(n-1): if a[i] == a[i+1]: juge[i] = True juge[i+1] = True nums = [] left = 0 right = 0 cou = 0 for i in range(n): if juge[i] == False and cou == 0: left = i cou += 1 if juge[i] and cou == 1: right = i-1 cou = 0 nums.append([left, right]) if len(nums) == 0: if n % 2 == 1: print(n // 2 + 1) exit() else: print(n // 2) exit() #print(nums) ans = sum(juge) for i in range(len(nums)): score = max(0, (nums[i][1] - nums[i][0] + 1) - 2) ans += score // 2 print(ans) if __name__ == '__main__': main()